It was only after he had read the papers Mr. Gross realized the task before him was difficult to complete.
A. when B. that C. which D. what
—Did you enjoy yourself last night?
—Yes, it’s very nice of you. I appreciated to your birthday party.
A. to be invited B. to have invited
C. having invited D. being invited
Believe it or not, Lucy’s sister suddenly tears when we were eating.
A. burst out B. burst in
C. burst into D. burst on
basic fist-aid techniques will help you respond quickly to emergencies.
A. Known B. Having known
C. Knowing D. Being known
The reason he gave for his absence was made up by his elder brother. In fact, the reason he was absent is he went to the zoo.
A. which; because B. why; that
C. for which; because D. that; for which
Only when you stay and live with local people for a period of time will you have better understanding of life here.
A. a; / B. the; a C. /; the D. the; the
